If You're Queen Of England, You Get 2 Birthdays And A Parade
Queen Elizabeth's "official" 90th birthday will be celebrated June 11, even though she was born April 21. The double-birthday tradition dates to 1748.By Katie Link | April 20, 2016
April 21 is Queen Elizabeth's 90th birthday. June 11 is also Queen Elizabeth's 90th birthday (at least for this year).
Elizabeth Alexandra Mary was born on April 21, 1926 — that's her real birthday.
But she also gets an "official" birthday every year in June. This year, it will be celebrated on June 11.